Reduction of one-loop (and more?) Amplitudes at the Integrand level

por Ioannis Malamos (Radboud University Nijmegen)

martes 13 sept. 2011 12:00 → 13:00 Europe/Madrid

Sala Seminarios IFIC (Edf. Institutos de Investigación)

In the era of LHC, theoretical calculations of one loop and sometimes two loop amplitudes are necessary.The complexity of these calculations is so high that one should always try to reduce the problem into simpler ones.We start with the one loop case giving a detailed description of the OPP method for reduction of any one loop amplitude at the integrand level.We discuss the necessity of the so called spurious terms for the reduction formula and the rational terms once one departs from 4 dimensions.At the end we discuss briefly possible extension of this method at two loops.

Diapositivas transpis871.pdf